Manifolding-sheet.



No. 680,637. Patented Aug. :3, mm.

H. P. BROWN.

MANIFOLDIN G SHEET.

(Application filed. May 17, 1899 (No Model.)

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UNITED STATES.

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MANlFb-LDlNG-SHEET;

SPECIFICATION forming part of Letters Patent No. 680,637, dated August13, 1901. Application as May 17,1899. satin No. 717,236. on man.)

To all whom it may concern;

Be it known that I, HoRAcn P. BROWN, a citizen of the United States,residing at San Francisco, in the county of San Francisco and State ofCalifornia, have invented certain new and useful Improvements inManifolding:

Sheets; and I do hereby declare the following to be a full, clear, andexact description of said invention, such as will enable others skilledin the artto which it most nearly appertains to inake, use, and practicethe same.

This invention relates to improvements in manifolding-sheets and in themethod of preparing the same.

The object of the present invention is to obviate the necessity for theuse of carbon or other compounds which are set upon the surface of thepaper to which they belong, so as to be removed by reason of theirinherent marking qualities.

Its further object is to produce a transfer which is clear and legibleand which 'will not be subject to accidental rubbing or smudging; andits further object is to produce a manifolding impression withoutlimitation as to the color or number of the transferred impressions.

With these objects in vie the invention consists for manifolding-work inplacing on the one surface of asheet-of paperathin film or coating ofadhesive substance and inplacing upon the other surface a coloringcompound of any desired tint and having such a body that it may be inpart or totally drawn away from the paper by the adhesive substance whenthe same is firmly pressed together.

It further consists in the various matters hereinafter described andclaimed. I Heretofore manifolding has been generally performed by theinterposition of a sheet of what is styled carbon-paper. In otherinstances carbon has been adhered to the back sheet upon which theoriginal impression is made, and the carbon has been transferred to theface of the paperlaid beneath it. first method has proven objectionablefor the reason that the carbon-sheet has necessitated an independenthandling, during which the operator has been compelled to place hisfingers upon the surface of the sheet and has had transferred from it tohis fingersapor- The tion of the carbon. The second method has provenobjectionable for the reason that the sheets where they have restedtogether have become impressed with the color of the'adjacent carbon,and in some instances the oilor :other substance with which the carbonis what is known as water-colon? This is not I removable by contactalone with ordinary paper-surfaces. In some instances the transferringqualities of this color compound are improved by mixing with it chloridof caleium. This chlorid of calcium is more or less deliquescent andprevents the color compound from becoming entirely dry or hard The colorcompound may be applied by any suitable method. That at present employedby me is carried out by the use of what is known as an ink mill,consisting in a combination of rollers for spreading evenly and solidlythe compound contained within a reservoir. When the color compound hasbeen spread upon the sheet, the same is allowed to become partially drybefore applying the adhesive surface upon the other side. In thepreferred form the adhesive used in this invention is Japanese vegetablewax. In applying the wax is heated until it becomes a thin liquid, whenit is applied to the side of the sheet opposite that carrying the colorcompound. In applying this wax any suitable method is used, and it is soapplied as to produce a thin film or surface of the wax upon the sheet.By this means we have now produced what has been herein termed amanifolding-sheet--that is, a sheet which will receive an impressionupon the one surface while transferring an impression from the othersurface. In preparing manifold books the intermediate sheets are thusprepared; but the first sheet or the sheetof the original impression isprepared .with a colored surface described only while-the last sheet ofthe manifoldingfsheets is prepared with a wax Lift ' such material.

The invention has so far been described with reference to itsapplication to manifoldbig-hooks only. It is, heweveiyequally applicableto separate sheets, the one of which is prepared by having 'the coloredsurface herein described upon the one side, leaving a clear surface forthe original impression upon the other side. Whatis herein termed a.transfer-sheet may be prepared with an adhesive surface upon the oneside, leaving a clear surface upon the other.

In the operating of manifoldiug with sheets prepared either for amanifold-book or for a simple transfer, as just desoribed,the sheets aresuperimposed, so that the colored surface of the one sheet rests againstthe adhesive surface of the other. When the original impressionorwritiug is now performed, there is imparted to the sheets a pressurealong the lines of the writing. This pressure brings into close contactthe color surface of the one sheetand the adhesive surface of the otheralong the lines of the writing. The adhesive surface adheres to thatpart of the color surface against which'it has been pressed with astrength which is sufficient to separate a portion or all of the colorsurface from the sheet to which it was originally applied. A perfecttransfer of the color surface of the one sheet to the adhesive surfaceof the other sheet is thus obtained along the lines of pressure asapplied to the original copy.

This invention is equally applicable to the purpose for which it isdesigned when the original copy is made chirogra phically with pen orpencil or when it is made by printing, either by presswork or bytype-writer.

Vhile I have herein described the invention as using a certain kind ofwax, I do not wish to be understood as confining, myself to \Vhile Iprefer it for its general qualities, I am aware that other adhecease?sives may be prepared and used with substantially the same result as faras the fact of transfer is concerned.

Having thus described this in \-'eution,what is claimed is- 1. Amanifolding-sheet having a removable color compound upon the one sideand provided upon its other exposed side with an adhesive substanceadapted to receive and retain a. color compound when the same is appliedthereto by pressure; substantiallyas described.

2. A mauifolding-sheet having upon the one side thereof a removablecolor com pound which is not a marking or transferable compound and uponthe other side a film or coating of an adhesive substance adapted toremove to itself the said color compound when the same is appliedthereto by pressure, substantially as described. a

3. In manifolding-sheets, the combination of two sheets, the one beingprovided with a continuous surface composed of a removable colorcompound, and the other with a continuous surface composed of anadhesive substance adapted to remove the color com pound from the othersheet when the said surfaces are superimposed, and pressure is appliedthereto, substantially as described.

4:. As a newarticle of manufacture, a manifolding-sheet having acontinuous surface.

composed of a color-film which cannot be transferred by pressure to thesurface of ordinary paper, but which can be transferred by pressure to apaper provided with a prepared surface; substantially as described.

In testimony whereof I have hereunto set my hand this 28th day of April,1899.

HORACE P. BROWN. Vitnesses:

E. F. MURDooK, BALDWIN VALE.

